Mechanical Engineering - Heat Transfer, Refrigeration and Air Conditioning - Discussion
Discussion Forum : Heat Transfer, Refrigeration and Air Conditioning - Section 8 (Q.No. 5)
5.
The lowest temperature during the cycle in a vapour compression system occurs after
Discussion:
25 comments Page 1 of 3.
Venkat sri said:
1 decade ago
In general the lowest temperature in any refrigeration cycle is occur after the EXPANSION process only. But in the answer mentioned that is after evaporation.
In the process of evaporation the refrigerant collect latent heat from bodies.
In the process of evaporation the refrigerant collect latent heat from bodies.
Faisal Ahmad said:
1 decade ago
I think Mr Venkat Sri is right the lowest temperature in refrigeration cycle occurs after Expansion or Throttling.
Pranesh said:
1 decade ago
The temperature after expansion and after evaporation remains same since after expansion, evaporation occurs at constant temperature.
Punit Vyas said:
1 decade ago
@Pranesh.
But during evaporation refrigerant takes latent heat so temp will be raised. So answer will be expansion.
But during evaporation refrigerant takes latent heat so temp will be raised. So answer will be expansion.
Asif ahamed said:
9 years ago
In VCR system if we observed in H-S and T-S diagram lowest temperature point is point 4 i.e. after expansion. So the answer is after expansion because after evaporation the condition of refrigerant is saturated vapor then how will be the lowest temperature after evaporation?
Dhanendra said:
9 years ago
During evaporation temperature remain constant.
During latent heat is added.
So, both are correct.
During latent heat is added.
So, both are correct.
Suresh said:
9 years ago
Both answer are correct.
As during evaporation latent heat is added.
As during evaporation latent heat is added.
Krishan kaushik said:
9 years ago
Lowest temperature is caused after the condenser.
Sumesh said:
9 years ago
Right answer is option B. Expansion.
Chacoboy said:
8 years ago
Due to sudden drop of pressure at expansion the temperature also drops but after expansion latin heat is received during the evaporation so correct answer is Expansion.
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